CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Preferred stock par value	Preferred stock additional capital paid-in	Common stock	Additional capital paid-in	Retained income	Deferred ESOP expense	Treasury stock	Accumulated other comprehensive income	Noncontrolling interest
Balance, beginning of year at Dec. 31, 2011					$ 3,189	$ 31,909	$ (43)	$ (16,795)	$ 29	$ 28
Increase (decrease) in equity
Equity incentive plans activity					(35)
Preferred stock issuance
Net income	1,189					1,189
Dividends on common stock						(218)
Dividends on preferred stock
Payments							2
Shares acquired								(575)
Shares reissued under equity incentive plans, net								98
Change in unrealized net capital gains and losses	670								670
Change in unrealized foreign currency translation adjustments	2								2
Change in unrecognized pension and other postretirement benefit cost	44								44
Change in noncontrolling interest ownership										(28)
Balance, end of year at Jun. 30, 2012	19,475			9	3,154	32,880	(41)	(17,272)	745
Balance, beginning of year at Dec. 31, 2012					3,162	33,783	(41)	(17,508)	1,175
Increase (decrease) in equity
Equity incentive plans activity					(57)
Preferred stock issuance			278
Net income	1,143					1,143
Dividends on common stock						(235)
Dividends on preferred stock
Payments							2
Shares acquired								(905)
Shares reissued under equity incentive plans, net								188
Change in unrealized net capital gains and losses	(1,183)								(1,183)
Change in unrealized foreign currency translation adjustments	(33)								(33)
Change in unrecognized pension and other postretirement benefit cost	91								91
Balance, end of year at Jun. 30, 2013	$ 19,869		$ 278	$ 9	$ 3,105	$ 34,691	$ (39)	$ (18,225)	$ 50